Abstract: Integrated File Sharing and Synchronization (FSS) and Backup Management and Storage (BMS) in a network appliance deployed behind a firewall and within a private trusted Local Area Network (LAN). The appliance processes backup image files of a LAN server's file system to generate fully constructed backup recovery points for the LAN server. Logical blocks for backup image files and associated recovery points may be stored locally on the appliance and redundantly in a trusted cloud domain, and a hypervisor on the appliance provides virtualization of the LAN server based on backup recovery points. A relay server cluster in the cloud facilitates reliable and secure access to the FSS services by remote client devices beyond the firewall, without changing fire wall rules, by employing HTTPS between remote client devices and the relay server cluster, and Secure Shell (SSH) tunneling between the cluster and the appliance behind the firewall.